To debug this, it's helpful to see the preprocessor output. Please try building
with this command.
make V=1
Suppose the last compilation (i.e., the one that failed) looks like this:
gcc *FLAGS* -c -o gzip.o gzip.c
where *FLAGS* stands for a lot of compiler flags. Then preprocess gzip.c instead
of compiling it, by running this command:
gcc *FLAGS* -E gzip.c >gzip.i
where *FLAGS* is the same as before. That is, use '-E' rather than '-c -o
gzip.o', and send the output to gzip.i. Then, please compress gzip.i and reply
to this email with gzip.i.gz as an attachment.